Missing Authentication for Critical Function in AMD Secure Encrypted Virtualization (SEV) firmware could allow a malicious hypervisor to forge SEV-TIO guest request messages potentially compromising SEV-SNP guest memory integrity and confidentiality.

Attack Vector Local

Attack Complexity Low

Privileges Required High

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact High

Subsequent System Integrity Impact High

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00187.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
AMD AMD EPYC™ 9005 Series Processors affected
Version Status Constraints
TurinPI_1.0.0.B unaffected —
AMD AMD EPYC™ 8005 Series Processors affected
Version Status Constraints
TurinPI_1.0.0.B unaffected —
AMD AMD EPYC™ Embedded 9005 Series Processors affected
Version Status Constraints
EmbeddedTurinPI_SP5_1005 unaffected —

No data.

No data.

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Project Subscriptions

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3038.html cve-icon cve-icon
History

Wed, 11 Nov 2026 16:45:00 +0000

Type Values Removed Values Added
Title Missing Authentication in AMD SEV Firmware Enables Hypervisor-Controlled SEV‑SNP Memory Compromise

Tue, 10 Nov 2026 22:30:00 +0000

Type Values Removed Values Added
Description Missing Authentication for Critical Function in AMD Secure Encrypted Virtualization (SEV) firmware could allow a malicious hypervisor to forge SEV-TIO guest request messages potentially compromising SEV-SNP guest memory integrity and confidentiality.
Weaknesses CWE-306
References
Metrics cvssV4_0

{'score': 6, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: AMD

Published:

Updated: 2026-11-10T22:12:04.455Z

Reserved: 2025-12-06T15:11:32.982Z

Link: CVE-2026-0480

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-10T23:17:19.607

Modified: 2026-11-10T23:17:19.607

Link: CVE-2026-0480

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-11T16:45:21Z

Weaknesses